Protective air filtration device



FIG. 1 is a front view of the protective air filtration device of the present invention;

FIG. 2 is a rear view thereof;

FIG. 3 is a top view thereof;

FIG. 4 is a bottom view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a left side view thereof; and,

FIG. 7 is a perspective view thereof.

The portions of the design depicted in broken lines form no part of the claimed design. 

The ornamental design for a protective air filtration device, as shown and described. 